如何在PHP中正确和安全代表迭代器吗？

How to properly and safely delegate an iterator in PHP?

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而作为助理和安全代表，她怀着超级推销员的热情足迹遍及全球。

But being an aide and security agent, she tools across the globe with the zeal of a super-sales woman.

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代表英国航空公司飞行员的协会表示，现如今我们迫切需要提高全世界的航空安全水平。

The association representing British airline pilots says that there is an urgent need to raise levels of air safety throughout the world.

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